Dynamics of the solar interior and the solar dynamo

Details Dynamics of the solar interior and the solar dynamo Dynamics of the solar interior and the solar dynamo

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sscs.nasa....3g&link_type=abstract

In NASA. Goddard Space Flight Center Study of the Solar Cycle from Space p 3-11 (SEE N80-17944 08-92)

Physics

Dynamic Characteristics, Photosphere, Solar Activity, Solar Interior, Solar Physics, Sun, Luminosity, Solar Corona, Solar Magnetic Field, Solar Rotation, Solar Wind

Scientific paper

The solar convection zone is the origin of most of the variations in solar output observed or suspected to occur. The Sun's magnetic field is rooted there, and solar activity and the solar cycle are generated and maintained there. Changes in the magnetic fields which reach into the solar atmosphere and beyond to interplanetary space are largely determined by the dynamo action of velocity fields in the convection zone. If changes in solar luminosity occur on time scales of months to millenia, such changes probably have their origin in the changing dynamics of the convection zone, either as cause of or in response to long term changes in the level of solar activity. Fluctuations would occur in the rate at which energy is brought to the surface by convection, and the solar diameter would be slightly modified. To describe and ultimately understand the global workings of the solar dynamo requires simultaneous high quality photospheric observations of solar velocities, magnetic fields, intensity patterns, luminosity and various radiative outputs. The observations must be nearly continuous in time and of long duration-most or all of a solar cycle. Such a measurement program should be a major part of the proposed Solar Cycle and Dynamics Mission.

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